# Scott P. Scheper - Introducing the Antinet Zettelkasten (Highlights)  ## Highlights - The four principles Niklas Luhmann used to build his notebox system are: 1. Analog 2. Numeric-alpha 3. Tree 4. Index ([View Highlight](https://read.readwise.io/read/01jg3bq8fe14zffx8a3t2s7ebm)) ^829724262 - When people first see a notecard address like `3306/2A/12`, they think of it as a hierarchical system. Yet it’s not. It’s merely the *location* of where the leaf lives on a branch or stem on your tree of knowledge. ([View Highlight](https://read.readwise.io/read/01jg3bsd7ty3ny036wynzb0hz6)) ^829724368